PA MOD 9 ;Q1

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Name: _________________________________________ Grade & Section: _____________ Date submitted: __________________________________ Date Checked: ______________ SCIENCE 8 PARALLEL ASSESSMENT QUARTER 1 WEEK 8 – MODULE 9 WRITTEN OUTPUT DIRECTION: Write TRUE if the statement is correct and write FALSE if the statement is incorrect. _______ 1. Temperature is affected by the movement of particles in the environment. _______ 2. If the molecules vibrate faster the speed of sound in a medium becomes greater. ________3. When the temperature increases, the air molecules move faster so the speed of sound is slower. ________ 4. Solid, liquid, and gas are the medium in propagating sound. ________ 5. The factors affecting the speed of sound are density and humidity only. PERFORMANCE TASKS Complete the table below by computing the speed of sound in air at different temperature using the equation below. Show your solutions in each item, you can use the back potion of this paper. Use the formula below. Example: Temp is 5 ºC V = 331 m/s + 0.6 m/s (Temperature) C =331 M/S + 0.6 m/s (5 ºC) C = 331m/s + 3 m/s V = 334 m/s Temperature (in Celsius) Speed (in meter per second) 30 ºC 40 ºC Parents Signature: _______________________ Teachers’ Feedback : _____________________

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